关键词: 伊春, 林火, 时空分布, 气象因子

Abstract: Based on the data of forest fires from 1980-2010 in Yichun region of Heilongjiang Province, the temporal and spatial pattern of the forest fires was studied by using methods, such as GIS, SPSS17.0, and EXCEL. The results showed that the 30 years history could be divided into two periods: it was the high fire occurrence stage during 1980-1987 and duration of 1988-2010 was the steady fire occurrence stage, showing a decreasing tendency. During the whole period of time, ordinary forest fires and big forest fires were the main types of forest fires. Forest fires mainly occurred in Spring and Autumn. In terms of the spatial distribution, the fire frequency and fire area were concentrated in the northern region, mainly in Jiayin and Wuyiling. Based on analysis of different forest fire originations, the moisture, temperature and wind speed had most obvious effects on forest fire occurrence. The more the moisture, the lower the temperature, and the lower the wind speed, the lower possibility the fire.

Key words: Yichun, forest fire, spatial and temporal distribution, meteorological factor